LOGAN – City officials and representatives of the Utah Department of Transportation are reminding local motorists that construction work on the 600 South Underpass Project will begin on Tuesday, Sept. 2.
When that project is completed in the summer of 2026, 600 South will be permanently closed at Main Street.
UDOT officials expect minimal impact on Main Street travel lanes in the immediate future, however.
Impacts during the initial phase of the project, from September to December of this year, are anticipated to include occasional shoulder, pedestrian sidewalk and outside lane closures.
Following a seasonal hiatus from December 2025 to March 2026, construction impacts are expected to include variable lane closures and traffic may often be reduced to one lane in each direction.
UDOT officials expect most of the project work to be accomplished during daylight hours Monday through Friday, with some nighttime and weekend work as well.
State officials encourage motorist to use 1000 West and 200 North as alternate routes during peak traffic hours.
Access to intersections between 500 South and 700 South will remain open, but dedicated turn lanes may be restricted.
Project managers also advise that several nighttime road closures between 500 South and 700 South will be required to transport heavy equipment, materials and large structures.
The exact times of those closures will be announced through the project website, e-mail updates, social media and text messages.
The UDOT construction notice for the 600 South Underpass Project can be accessed by going online to https://mail.google.com/mail/u/0/#inbox/FMfcgzQbgcTwcZWClkZKDswgBHCtStDw?projector=1&messagePartId=0.1